#navigationBar{
    z-index: 99999;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-logo i {
    color: #E67E22;
    font-size: 1.5rem;
}

.nav-logo h1 {
    font-size: 1.25rem;
    font-weight: bold;
    letter-spacing: 1px;
    margin: 0;
}

.nav-logo h1 span {
    color: #E67E22;
}

.nav-desktop {
    display: none;
}

@media (min-width: 768px) {
    .nav-desktop {
        display: flex;
        align-items: center;
        gap: 2rem;
    }
}

.nav-desktop a {
    color: white;
    text-decoration: none;
    font-weight: bold;
    position: relative;
    transition: color 0.2s;
}

.nav-desktop a:hover {
    color: #E67E22;
}

.nav-desktop a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: #E67E22;
    transition: width 0.3s;
}

.nav-desktop a:hover::after {
    width: 100%;
}

.nav-mobile-btn {
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
}

@media (min-width: 768px) {
    .nav-mobile-btn {
        display: none;
    }
}

/* 用户头像 */
.user {
    display: flex;
    align-items: center;
    height: 40px;
}

.user>* {
    margin-left: 0.2em;
}

.user .profilePicture {
    border: 1px solid black;
    background-color: white;
    height: 40px;
    width: 40px;
}